The report showed that blue collar workers lost ten days a year due to ill health, compared with five days for white collar workers.报告显示，蓝领每年因病缺勤十天，相比之下白领是五天。She was wearing a black coat with a white collar.她穿着一件白领黑外套。There is increasing social mobility among senior white collar workers, who are able to move quite rapidly between organizations.高级白领的社会流动性越来越大，他们能够在企业之间迅速流动。